People are having trouble because this chapter's page are at resolution of 5197x7323. Yes that is ridiculous and completely unnecessary. And yes that also results in obnoxiously big file sizes, over 5 megs for page 1, 6.58MB for page 2.
People on slow or metered internet connections would do well to go in the md's reader settings and setting the "Data saver" option to "Compressed images".
Though ideally, the scanlators would look into cutting the resolution and file size of their chapters before uploading. Coz this sort of resolution doesn't help the readers.
Obviously, it's great for the people working on the files for cleanup and redrawing. But when it's just for viewing the files, it's completely superfluous. And an issue for people with bad connections, or weak/old phones.
Now, on the chapter itself. Cute. I'm not sure how long the author could keep it fresh if it was serialised though. Might be best left as a one shot.